Basic IV Calculations

Question 1

A microdrip set is always -

Answer 1

60 drops per mL

Question 2

Macro drip sets are always either-

Answer 2

10, 15, or 20 drops per mL

Question 3

Calculate the gtt/min rate to infuse 125 mL/hr using a 10gtt/mL infusion set

Answer 3

21 gtts/min

Question 4

Calculate the gtt/min rate to infuse 100 mL/hr using a 20 gtt/mL infusion set

Answer 4

33 gtts/min

Question 5

Calculate the gtt/min rate to infuse 83 mL/hr using a 17 gtt/mL infusion set

Answer 5

24 gtts/min

Question 6

An IV of 1000 mL was prescribed to infuse over 10 hours at a rate of 25 gtt/minute. Set calibration is 15 gtt/mL. After 5 hours, a total of 650 mL has infused instead of 500 mL.

Recalculate the new gtt/min flow rate to complete the infusion on schedule

Answer 6

18 gtts/min

Question 7

An IV of 470 mL was prescribed to infuse over 5 hours at a rate of 20 gtt/minute. Set calibration is 15 gtt/mL. After 2 hours, a total of 180 mL has infused instead of 235 mL.

Recalculate the new gtt/min flow rate to complete the infusion on schedule

Answer 7

24 gtts/min

Question 8

An IV of 500 mL was prescribed to infuse in 3 hours using a 15 gtt/mL set. With 1 ½ hour remaining, you discover that only 150 mL is left in bag. At what rate will you need to reset the flow to complete on time?

Answer 8

25 gtts/min

Question 9

An IV was started at 0900 with prescription to infuse 500 mL in 6 hours. At 1200, the IV infiltrated with 350 mL left in the bag. At 1300, the new IV was restarted. The set calibration is 20 gtt/mL. Calculate the new flow rate to deliver the infusion on time.

Answer 9

39 gtts/min

Question 10

A rate of 75 mL/hour is prescribed for a volume of 500 mL. Calculate the infusion time

Answer 10

7 gtts/min